C#

public class MyEventArgs: EventArgs
{
  private string _UserName;

  public MyEventArgs(string UserName)
  {
    _UserName = UserName;
  }

  public string UserName()
  {
    return _UserName;
  }
}

public delegate void myEventHandler(object sender, MyEventArgs e)

public class LoginForm: Form
{
  public Event myEventHandler LoginSuccessful;

  ...
}

LoginSuccessful(this, new MyEventArgs(UserName));

private void lnklblLogIn_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
    {
    sp.Stop();
    myUserName = "";
    frmLogIn LogIn = new frmLogIn();
    if (LogIn.ShowDialog() == DialogResult.OK)
       {
       myUserName = LogIn.UserName;
       }
    }

OriginalGriff wrote:

set up a public property (called say UserName) in the log in form

private string userName;
public string UserName 
   { 
   get { return userName; }
   }

using (StreamWriter writer = new StreamWriter("C:\\log.csv", true)) //add ,true to this to append
            {
                writer.WriteLine(textBox1.Text + "," + System.DateTime.Now);
                
            }                

Luc Pattyn wrote:

No problem[^].

Ravi Bhavnani wrote:

collector's haven for Dinky Toys

using System;
using System.Windows.Forms;
using System.IO;

namespace WriteCSV
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.timer1.Enabled = !this.timer1.Enabled;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            FileStream fs = new FileStream("test.csv",  FileMode.Append, FileAccess.Write);
            StreamWriter sw = new StreamWriter(fs);
            sw.WriteLine(DateTime.Now.ToString());
            sw.Close();
            fs.Close();
        }
    }
}